Finding the Fourth Proportional to 22,981.84, 31,715.50 and 12,910.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,981.84 : 31,715.50 = 12,910.30 : x
2. Step 2: Convert to fraction form
   22,981.84/31,715.50 = 12,910.30/x
3. Step 3: Cross multiply
   22,981.84x = 31,715.50 × 12,910.30
4. Step 4: Simplify right side
   22,981.84x = 409,456,619.65
5. Step 5: Solve for x
   x = 409,456,619.65/22,981.84
6. Step 6: Final answer
   x = 17,816.53